Benjamin p



B. F. CHUCKER.

Shutter-Fasteners.

N0.l5l,096, Patented May19,1874.

NTED

BENJAMIN F. CROCKER, OF BARNSTABLE, MASSACHUSETTS, ASSIGNOR T() HIMSELF AND CHARLES C. UBOCKER, OF SAME PLAGE.

lmrnorrwenr In sHUrTEa-FASTENERS.

Specification forming part of Letters Patent No. LLGQG, dated May 19, 1874; application tiled April 7, 1874.

To all whom it may concern: Be it known that I, BENJAMIN F. CRO CHER., of Barnstable, in the county of Barnstable and State of Massachusetts, have invented an Improved Blind-Fast; and I do hereby declare that the following, taken in connection with the drawings which accompany and form part of this specification, is a description' of my invention sufficient to en able thoseskilled in the art to practice it.

The invention relates to the construction o a blind-fastenin g to be fastened to the bottom bar of a blind.

In my invention I make a tubular screw to screw into a mortise bored up into the bottom of the bar, a pin eXtendin g through said screw, and being riveted over the closed end thereof; and the tube or screw also contains a coiled spring that encompasses the pin, one end of this spring extending through a hole made in the side of the tube, and the other end bearing against and being held by a shoulder on the pin. The screw or tube has a head between two lips, extending from which a hookplate pla-ys, this plate forming the head ofthe pin, or being the hook-plate from which the pin extends. This plate has at its opposite edges two hooks, and beyond each hook an incline, and the plate is held in normal position by the stress of the springs. Being in this position, and the screw affixed to the blind, the opening and throwingbaek of the blind brings the incline of one hook against a staple or other suitable device extending from the building, the contact and pressure forcing back the arm of the plate until the staple or` pin slips into the hook. The arm will then spring forward and lock the blind to the staple. When the blind is swung to the window to close it, the opposite hook will be brought into contact with a pin extending from the window-seat, the contact and pressure similarly throwing baekthe arm until the hook springs over the pin. Y

The invention consists in the blind-fasten ing having the construction thus generally described, and specifically pointed out in the claim.

The drawing represents a construction embodying the invention.

Figure 1 shows the fastening in side elevation. Fig. 2 is a plan of it. Fig. 3 is an end and sectional elevation.

a denotes the tubular screw or socket; b, the iianged head thereof, said head having the two lips or projections, c. head between these lips is the center of the plate d, the plate being attached to the screwtube by its pin c, which extends through the tube and through the closed end j' thereof, being riveted over said end. From this plate opposite arms g h extend, one arm having just beyond the screw-head, and on one edge, the hook il, with the incline k beyond it, and the other arm having its opposite edge similarly formed with the hook l and incline m. rlhese armsv are held in the normal positions seen in thedrawing by the stress of the spiral spring a, one end of which is hooked through the hole o in the screw, and the other of which -bears aga-inst the shoulder p on the pin c.

Either` arm is pressed back as it strikes the pin or staple upon which it is t0 fasten, the hook springingover the saine as the pressure brings the hook into position for the same.

The construction is very simple, very cheap, and very enduring and eliective.

I claim- The screw-threaded tubea., having fastened to it, by the pin c, the plate d, with its hooked arms g h., said pla-te playing between the lips or projections c, and being held normally in position by the spring a, applied and oper ating as described.

Executed this 12th day of March, A. D. 1874. 4

BENJAMIN F. CRQGKER. Titnesses DANIEL S. Brac-DEN, ALFRED WHITE.

Against the' 

